Best Alien movies that are oscar winners or nominees

Actors : Margot Kidder, Gene Hackman, Marlon Brando, Christopher Reeve,
Directors : Richard Donner,

An alien orphan is sent from his dying planet to Earth, where he grows up to become his adoptive home's first and greatest superhero.

Actors : Will Smith, Bill Pullman, Mary McDonnell, Jeff Goldblum,
Directors : Roland Emmerich,

The aliens are coming and their goal is to invade and destroy Earth. Fighting superior technology, mankind's best weapon is the will to survive.

Actors : Jerry Lewis, Joan Blackman, Fred Clark, Earl Holliman,
Directors : Norman Taurog,

The weirdest alien of the galaxy pays a visit to Earth...